Abstract

Exploiting the rhizospheric fungi from critical land area is one way to know the ability of the fungi to absorb Fe. Calopogonium mucunoides which used as experimental plant in this study, capable to grow well in critical land area. The study begins with the isolation of rhizospheric fungi of critical land district Cempaka, calculate the Fe content in the areas of critical land, then selection of the fungi ability to absorb Fe and spore fungi application to C. mucunoides growth. Humicola sp. R.Dn (from rhizosphere of Dianella nemorosa Lam.) have the better ability to absorb Fe than with two other isolates (Penicillium sp. R.Ha and Penicillium sp RG). Humicola sp. R.Dn uptake 108.83 mg Fe / mg biomass. Giving 2.38 x 103 of Humicola sp. R.Dn spore significantly affected on the reduction of plant Fe content. Giving different number of spore give different effect to thenumber of leaves and fresh weight of C. mucunoides.